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Significant Customer Concentration (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Concentration Risk Percentage [Abstract]    
Revenues, net $ 7,483 $ 6,738
Revenue [Member] | Customer Concentration Risk [Member]    
Concentration Risk Percentage [Abstract]    
Revenues, net $ 1,990 $ 1,311
Concentration risk percentage 26.60% 19.50%
Accounts Receivable [Member] | Customer Concentration Risk [Member]    
Concentration Risk Percentage [Abstract]    
Accounts receivable $ 578  
Concentration risk percentage 16.20%